Check out this link:

http://forums2.gardenweb.com/forums/load/cornucop/msg0600255732508.html?42

Here is a link that might be useful: groundhog warfare

Tie out a dog nearby.

I think I will go for a dog next year it is to late for t this year the groundhog has eaten everything but the potatoes and it is eating the vines on them now while we are not around. I have never seen this before. But I will say this. We have friends that live in the country and they don't have this problem. We live in the city and we have coyotes, deer's,bear's and way to many GROUND HOGS. not to mention the stray cats. Just goes to show you how some city fokes are taking up the animals place to live. We have lived here around 35 years and guess we will die here. But we make due with what we can and share with the animals as you can also see. I have not made this statement to hurt any one so I am sorry if I have. Juju